s_switch
s_switch (p->send_cert));
s_switch (p->send_cr));
s_switch (p->match_empty_cr));
s_switch (p->verify_cert));
s_switch (p->verify_identifier));
"force" : s_switch (p->nat_traversal));
s_switch (p->passive));
"force" : s_switch (p->ike_frag));
s_switch (p->ini_contact));
s_switch (p->gen_policy));
s_switch (p->support_proxy));
p->rekey == REKEY_FORCE ? "force" : s_switch (p->rekey));
extern const char *s_switch(int);